package servlet;

import bean.ShopBean;
import com.mysqld.Mysqld;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import util.JdbcUtil;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.UUID;

@WebServlet(name = "UpdateServlet", value = "/UpdateServlet")
public class UpdateServlet extends HttpServlet {

    // 上传文件存储目录
    private static final String UPLOAD_DIRECTORY = "upload";

    // 上传配置
    private static final int MEMORY_THRESHOLD   = 1024 * 1024 * 3;  // 3MB
    private static final int MAX_FILE_SIZE      = 1024 * 1024 * 40; // 40MB
    private static final int MAX_REQUEST_SIZE   = 1024 * 1024 * 50; // 50MB

    //定义提示信息
    String show  = "";

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");//防止中文乱码


        ShopBean rooms =new ShopBean();
        //以上处理中文乱码
        // 检测是否为多媒体上传
        if (!ServletFileUpload.isMultipartContent(request)) {
            // 如果不是则停止
            PrintWriter writer = response.getWriter();
            writer.println("Error: 表单必须包含 enctype=multipart/form-data");
            writer.flush();
            return;
        }

        // 配置上传参数
        DiskFileItemFactory factory = new DiskFileItemFactory();
        // 设置内存临界值 - 超过后将产生临时文件并存储于临时目录中
        factory.setSizeThreshold(MEMORY_THRESHOLD);
        // 设置临时存储目录
        factory.setRepository(new File(System.getProperty("java.io.tmpdir")));

        ServletFileUpload upload = new ServletFileUpload(factory);

        // 设置最大文件上传值
        upload.setFileSizeMax(MAX_FILE_SIZE);

        // 设置最大请求值 (包含文件和表单数据)
        upload.setSizeMax(MAX_REQUEST_SIZE);

        // 中文处理
        upload.setHeaderEncoding("UTF-8");

        // 构造临时路径来存储上传的文件
        // 这个路径相对当前应用的目录
        String uploadPath = getServletContext().getRealPath("/") + "images";
        System.out.println(uploadPath);



        // 如果目录不存在则创建
        File uploadDir = new File(uploadPath);
        if (!uploadDir.exists()) {
            uploadDir.mkdir();
        }
        String names = null,contenct = null,price = null,id=null;
        try {
            // 解析请求的内容提取文件数据
            @SuppressWarnings("unchecked")
            // 中文处理
            List<FileItem> formItems = upload.parseRequest(request);


            //  contenct   uploadFile  A  B  C
            if (formItems != null && formItems.size() > 0) {
                // 迭代表单数据
                for (FileItem item : formItems) {
                    // 处理不在表单中的字段
                    if (item.isFormField()) {
                        String name = item.getFieldName();
                        System.out.println(item);

                        if(name.equals("name")) {
                            String str = item.getString();

                            names=new String(str.getBytes("ISO-8859-1"),"utf-8");
                            System.out.println("这个是结果"+names);

                        }
                        if(name.equals("id")) {
                            String str = item.getString();

                            id=new String(str.getBytes("ISO-8859-1"),"utf-8");


                        }
                        if(name.equals("contenct")) {
                            String str = item.getString();
                            contenct=new String(str.getBytes("ISO-8859-1"),"utf-8");



                        }

                        if(name.equals("price")) {
                            String str = item.getString();
                            price=new String(str.getBytes("ISO-8859-1"),"utf-8");

                        }
                    }



                }
            }


            // System.out.println(zhuxuetype);
            if (formItems != null && formItems.size() > 0) {
                // 迭代表单数据
                for (FileItem item : formItems) {
                    // 处理不在表单中的字段
                    if (!item.isFormField()) {
                        String fileName = new File(item.getName()).getName();
                        String uuid = UUID.randomUUID().toString().replaceAll("-", "");
                        String filePath = uploadPath + File.separator + uuid+".png";


                        if(fileName.endsWith("png")||fileName.endsWith("jpg")){

                            File storeFile = new File(filePath);
                            // 在控制台输出文件的上传路径
                            System.out.println(filePath);//路劲
                            // 保存文件到硬盘
                            item.write(storeFile);

                            //

                            String ac;

                            QueryRunner qr = new QueryRunner(JdbcUtil.getDataSource());
                            Mysqld.setCon(JdbcUtil.open());
                            String sql="UPDATE s_shop set `name`=?,contenct=?,price=?,path=? where id=?";
                            String tt=uuid+".png";


                            String data[]= {
                                    names,contenct,price,tt,id
                            };
                            int num=Mysqld.upDate(sql,data);
                            if(num==1) {
                                request.setAttribute("message",
                                        "更改成功");
                            }else {
                                request.setAttribute("message",
                                        "更改失败");
                            }

                        }else {
                            //不是pdf
                            request.setAttribute("message",
                                    "请上传png,jpg格式图片");
                            getServletContext().getRequestDispatcher("/detailShop.jsp").forward(
                                    request, response);
                            return ;
                        }




                    }
                }
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            request.setAttribute("message",
                    "请选择图片");

        }
        // 跳转到 message.jsp
        request.getSession().setAttribute("id",id);
        getServletContext().getRequestDispatcher("/detailShop.jsp").forward(
                request, response);
        return ;





    }
}
